*{
  margin: 0;
  padding: 0;
}
li{
  list-style: none;
}
a{
  text-decoration: none;
}
img{
  display: block;
}
em,i{
  font-style: normal;
}
html,body{
  width: 100%;
  height: 100%;
}
input{
  outline: none;
  padding-left: 5px;
}

/* banner start */
.bannerbg{
  width: 100%;
  height: 745px;
  background:url(../img/22.jpeg) no-repeat;
  background-size: cover;
  opacity: 0.2;
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  margin: auto;
}
.banner{
  width: 1170px;
  margin: 0 auto;
}
.banner .ban_con{
  width: 1170px;
  margin: 0 auto ;
  display: flex;
  justify-content: space-around;
}
.banner .ban_con>div img{
  margin-bottom: 20px;
  border: 2px solid rgba(137, 80, 0, 0.3);
  border-radius: 16px;
}
.banner .ban_con>div img:last-of-type{
  margin-bottom: 5px;
}
.banner .ban_con .high{
  margin: 20px 0 ;
}
.banner .ban_con .middle{
  margin: 60px 0 ;
}
.banner .ban_con .low{
  margin-top: 90px;
}
  
/* main start */
main{
  width: 1170px;
  margin: 10px auto;
}
main .details .title{
  line-height: 40px;
  padding: 5px 20px ;
  color: #666;
}
main .details .title a{
  color: #ff9a3b;
}
main .details .title span{
  color: #888;
  font-size: 14px;
}
main .details .back{
  padding-left: 20px;
  font-size: 30px;
}
main .details .back a{  
  color: #cf6c0f;
}
main .details .text{
  text-align: center;
  font-size: 14px;
}
main .details .text h2{
  margin: 20px;
}
main .details .text .msg{
  margin: 20px;
  font-size: 14px;
  color: #a1a1a1;
}
main .details article{
  font-size: 16px;
  padding: 20px 0 20px 40px;
  line-height: 3;
  color: #666;
  text-align: left;
}


